Estima ABS Speed Signal Fault

I had similar ABS light and traction control issues on my Estima. Did you check the wheel speed sensors first? A faulty sensor can cause the control unit to throw errors. Also, scan the ECM for ABS or speed sensor fault codes. That might give you a clearer direction before assuming the control unit is fully defective.

When you checked the wheel speed sensors, did you use an oscilloscope to analyze the signal output? And when you scanned the ECM, did the fault codes point to a specific sensor, or just the ABS control module?

I checked the sensors, but I'm not skilled enough to use an oscilloscope. The codes I got were vague, pointing towards a general ABS malfunction. I took it to a workshop, and they confirmed it was the control unit.

Thanks for sharing. I'll consult a technician for a thorough evaluation. I suspect a similar defective control unit, potentially costing around 1000€. Thanks again for your help.